Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope

Details Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope

2004-08-31

arxiv.org/abs/astro-ph/0408585v1

Astrophys.J.614:L81-L84,2004

Astronomy and Astrophysics

Astrophysics

Accepted by ApJ Letters

Scientific paper

10.1086/425561

We report the detection of the lowest mass extra-solar planet yet found around a Sun-like star - a planet with an \msini of only 14.21 $\pm$ 2.91 Earth masses in an extremely short period orbit (P=2.808 days) around $\rho^{1}$ Cancri, a planetary system which already has three known planets. Velocities taken from late 2003-2004 at McDonald Observatory with the Hobby-Eberly Telescope (HET) revealed this inner planet at 0.04 AU. We estimate an inclination of the outer planet $\rho^{1}$ Cancri d, based upon {\it Hubble Space Telescope} Fine Guidance Sensor (FGS) measurements. This inclination suggests an inner planet of only 17.7 $\pm$ 5.57 Earth masses, if coplanarity is assumed for the system.

Affiliated with

Also associated with

No associations

Rating

Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of a NEPTUNE-mass planet in the $ρ^{1}$ Cancri system using the Hobby-Eberly Telescope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-689018